Hobson, J. A. (1891). Problems of poverty: An inquiry into the industrial condition of the poor. Methuen.
芝加哥风格引文Hobson, J. A. Problems of Poverty: An Inquiry into the Industrial Condition of the Poor. London: Methuen, 1891.
MLA引文Hobson, J. A. Problems of Poverty: An Inquiry into the Industrial Condition of the Poor. Methuen, 1891.
警告：这些引文格式不一定是100％准确.